Scale.



M. H. REED.

SCALE. APPLICATION FILLED APBI25.1907..

Patented Apr. '6, 1909.

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3 SHEETS- M. H. REED. scum.

. APPLIOATIOII FILED APB. 25.1907,

9 1 7, 1 4:8 Patented Apr. 6, 19053.

3 SHEETS-SHEET 2.

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SCALE.

APPLICATION FILED APR. 25.1907

Patented Apr. 6, 1909.

3 SHEETS-SHEET 3.

MATTHEW HOWARD REED, OF PITTSBURG, PENNSYLVANIA.

SCALE.

Specification of Letters Patent.

Patented April 6, 1909.

Application filed April 25, 1907. Serial No. 370,22 I

To all whom it may concern:

Be it known that I, MATTHEW HOWARD REED, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Scales, of which the following is a specification, reference being had therein to'the accompanying drawing. I

My invention relates to improvements in scales, more particularly to automatic or semi-automatic scales or scale attachments in connection or combination with the ordinary platform or lever scales, whereby the automatic scales may be used for ascertaining weights-without necessary adjustment of the poise or poises on the poise beam.

The automatic attachment is designed for determining weights up to any predetermined limit without manipulation of the poises, orin combination with the weight ascertained by the poise beam inlarge amounts, by indicating supplemental smaller divisions or fractions of such amounts as a unit.

In the accompanying drawings wherein the invention is illustrated ;Figure 1 is a view in'front elevation, partly in section, of the mechanism of a platform scale combined with my improved automatic attachment. Fig. 2 is a vertical sectional view thereof on the line ll 11. of Fig. 1. Fig. 3 is a perspective" detail view showing the operative connections betweenthe counterpoise stem and the controlling mechanism for the automatic scale. Figs. 4 and 5 are partial elevations similar to Fig. 1 and showing modified arrangements of the connectmg mechanlsm. are slmilar views showing the automatic scale.

In utilizing the automatic scale, it is designed that it shall normally be in extreme tension by means of any suitable weight adapted to withdraw the spring mechanism to reverse the indicating hand around one 7 entire revolution to zero, whereby upon ap- ,P tially effect of the weight, the spring of the autocounter-acting or lifting force to paror wholly overcome the 'gravitating matic scale may operate to retract the indicator hand, showing on the dial the amount ofgsuch subtraction from the effective weight'of the counter-weight. As shown, the dial subdivisions are enumerated in the with any desired reverse direction from the usual arrangement. For such purpose the dial is provided sub-divisions as for instance o, 500, 1000,-1500,1etc., the said sub-divisions, not as usual indicating the actual weight of the counterweight,-but large multiples thereof, so that a counterweight of 5 pounds for instance will operate the automatic scale indicating up to say 2500 pounds. It will thus be seen-that whenthe depending counter weight supporting frame of the automatic scale is connectedwith' the poise beam of the platform scale, material on the platform scale weighing any amount less than the limit of indication of the automatic dial,

will be automatically indicated thereon, a

merely! by the counter-acting effect 'of the upward lift of the scale beam.

Referring to the drawings, 2 represents the frame-work of the beam-supporting structure of an ordinary platform scale of well known type, employing the poise beam 3,"xtending through the loop 4, and having the depending stem 5 provided with the weightsuppoiting plate and cup 6, constituting the ordinary counter-poise for the frame, adapted to receive the counterweight 7 The beam 3 is also provided with the usual poise, one -or more, set normally at zero, or in balancing positionfto compensate for tare weight, and is connected up with the lever mechanism of the platform scale in the usual or any suitable manner.

8 indicates an automatic scale of the usual slpring type, but rovided with suitable cial properly provi ed with reversed graduations for indicating the desired sub-division of any selected unit, as 2500 pounds, for

which the platform scale isiadapted. The operative mechanism of the automatic scale 8 is normally retracted by means of a downwardly extending stem 9, combined with the poise beam as shown in Figs. 1 2 Y and 3, by means of a yoke construction consisting of upper and lower cross bars 10 and 11, verticallyconnecting bars12, 12, and a downwardly extending rod 13 lpro vided with balancing cup '14 and 15 mounted in dash-pot D. /By such cona plunger struction it will be seen that the stem 5 of the'poise beam 3 and its cup 6, constituting the counter-poise, and counter-weight 7His ada' ted to rest upon the cross-bani 1-, nor-.- mal y depressing the frame, withdrawing the spring of the automatic scale, and holdmg the indicator at zero.

- The operation of the device will be readily understood'from the above description. The'beam .of the scale is first balanced in the ordinary manner and the spring balance of the automatic scale isthen withdrawn for'one revolution by means of the counterweight 7. When-the load is placed on the platform of-the scale, the up-pull on the poise beam 3 It will he understood that the spring of the automatic scale is regulated to proper tension so that the desired amount will be indicated.

.When the load passes oif the platform the beam and counter-poise will drop and allow the spring balance to again come to zero,

due to weight 7; The dash-pot and plunger prevent sudden jars from having any-effect on the spring balance of the automatic scale and also cause the indicating pointer to quickly come to rest. '7 V It for any reason it is desired to use the beam of the platform scale for ascertaining the weight in the usual manner, the automatic attachment -may be disconnected in any way or permanently held down by any suitable attachment applied to red 9for other part of the mechanism, or byremoving' the weight 7 and placing it (an-balancing on 14 on stem 13; 1

Fig. 4 I have shown? modified. construction in which the spring of the automatic scale 8' is normally retracted by a con-' tinuous rod 9 bent or deflected as shown,

although said rod may be straight if desired.

In such'construction the rod 9 is provided with a cup 16 adapted to receive any suitable counter-weighting material, as shot, or it may have a wei ht-supporting disk 17 forcarrying.

any suitab e counterweight similar to weight set screw'20 u on stem 9'.

' suitable abutment adapter to engage scale 8 is provided with a cup 1'6 or disk 17 carrying a weight at the upper portion of the stem, while said rod is shortened and proawith an abutment, of a spring alanced-scale,

vided with the arm 19 and set screw 20, said arm bearing on plate 18 of the main stein 5". Said stem is extended continuously will lift the counter-weight, and its weight,. allowing the automatic spring balance to operate depending upon t eamountof up pullj-indicating on the dial the weight ofthe load on the platform.

rods 23, 23, with an automatic spring scale 8 raving an upwardly extending weighing platform of well known construction. Insuch arrangement the dash-pot extension 5 of stem 5' is-provided with a counter-weight The constructionshowii jn Fig. 7 is substantially the same as that just described, except that the weight-supporting disk 25 is mounted upon stern 5 of the poise beam and supporting device 240i any suitable kind.

is adapted to rest upon the platform'24 of the automatic scale while the dash-pot extension 5 is attached to the stem of the automatic scale to prevent vibration.

The operation of these various modifications'is substantially the same as that of the principal form previously described, and the platform scales may be employed either with or without the automatic scales with equally good results.

Other similar confbinations with automatic weighing mechanism may be employed orvar'ious other changes may be made by the skilled mechanic Without departing from the invention.

'W'hat I claim is:

1. The combination with the beam of a lever scale having a, depending rod prdvid'ed with an abutment, of a spring balanced scale, and means connected with said spring balanced scale and coactlng with said abutment for normally holding the spring scale in tension, substantially as set forth.

'2, The combination with the beam of a lever's'cale having a depending rod provided with an abutment, of a spring balanced scale means connected with said'spring balanced scale and coacting with said abutment for normally holding the spring scalein tension,

and-means connected with said depending rod adapted to diminish the efl'ect of said tension exerting means, substantially as set forth. i

3. The combination with the beam of a lever scale having a depending rod provided with an abutment, of a spring balanced scale having weight-sup orting means adaptedto coact with said a utment, and to balance beam, and means for' balancing the beam,

substantially as set forth.

4. The combination with the beam of a lever scale having a dependin .rod provided and an element; connected with the spring balanced scale interposed in the path of said the spring'scale at zero independent of the p abut msni a portion of the load will be imlioated 1: spring; bahiiicxod scale, subst-zmtm n 'lortli.

1 I V I 1 1 Vet some having a clogisiuuiug iOil, pro /woo w 4,31 an abumiont, of a, spring balanced scale, axul an oloiue balanced scale inflorposeal in. the path. of said abutment whereby 2- poifiion of the loa-zl will be unlimited on i; alanood lo, and minus fossil} l s' ulily couuooii V acting parts -substnntislly as set i an.

6. The combination M1 T T l;*? 1? li of a lo V01 scalehaving a (lap rod provided wiih an abutment, of a spring baiiuiootl'soslo provided with. Q depending rod having u 'oight -suppol'ting o'vlce and an arm at ed to engage. said a. utment; whereby :1 tion of the load will is indicated on tho balanced scale, menus cmiuoctod with said depending rod of the spring liillilllCQQi scale for pros emu vibrations Oi aid. substam ially as sot forth.

7. The combination wit-ii the l'JGZLTZE of a lo V81 scale imviug a depending 30(l provided with an abutment, of a spring balanced smlo provided with depending m having weigl1t-suppoi-ting (lGvlL'tQ u-ml an arm mlaptoil. to engage said ELlIHllJYHOIli w iwy a 901* ion of the loim will be i s lying balancwl soul-s, a dosl element ilierigaconnmnod balanced seals for preventing thereof, s'u" .uoiully as set forth.

8. The combination "with :1 over *oalol1m ing a depending rod providoil with an abutment, of a, spring-balanced scaleliavinq a (lepencling element, and. an adjustable (lGj'iCG secured to said element and mug-ed to 00- act with said abutinom or to be udustod to avoid engagement lll'3.1(l-''l ill, s bstzantially as set fort i. v

9. Thu combinationwith a lever, scale, of a spring balanced souls, means connected thefswitii for supporting a sup ueiuenml (lstacimblo weight for minimally holding the spz'i'nglmla-uoe(l scale in tonskm, {and means mm tious mimiuocizorl with the spring tom mus i'oi" opeixltivsly cim wting too s alunoexl scale will tho be of the "HHS. Wneroby too nip-pull oi the bemu thereof will roles o the tension on the 8}}1113g-i)3l211161l scale in proportion to the ail to indicate said load on the spring-baL duos/(l scale, and means for operatively 00nimg spring-balanced scale With the quickly (ii *omieotiug said tales, and means for prove: D vibration of the spring-bah aucod scale, substantially as set forth.

12. The combination with the beam of s,- lovor-soale l'iZlVll'ig at its free end 21 depending rod gilrovided with an abutment, of a spring mi anco sea-lo provided with a depending rod having WET, vided. uiii'h an arm adapted to engage said abutment whei-o oy operation of the boom will act counts- 1. to the downward pull on said weightsuppoi'ting lovioo v 1". The (mubinstion with the beam of a lover souls having at its free end 21 depending rod provided with an abutmeilt, of a spring balance scale provided with a depending roo having-s. weightsupporting device and-provided. with an adjustable arm adapted. to engage said abutment whereby operation of the beam Willnuctoc-untei' to the down pull on said Woighhsuppoiting device.

In testimony whereof I afiix mysignabure I in presence of lT-WO Witnesses.

MA l H-LEW HOWAR REED.

ilt-supporting device and promean: of the lsvor scale being mljusmblefor 4 

